Lock-hinge.



No. 821,861. PATENTED MAY 29, 1906. W. B. CROFT.

LOOK HINGE.

APPLICATION FILED JULY 25,1904

UNITED 'sTATEs PATENT OFFICE.

Specification of Letters Patent.

Application filed July 25, 1904:- Serial No. 218,037-

Patented May 29, 1906.

To all whom it may concern:

Be it known that I, WILLARD B. CROFT, a citizen of the United States,residing at Medina, in the county of Medina and State of Ohio, haveinvented new and useful Improvements in Lock-Hinges, of which thefollowing is a specification.

This invention is an improved lock-hinge, and comprises a hinge providedwith a sliding bolt which is movable to extend across the joint betweenthe leaves of the hinge to lock the hinge open.

The object of the invention is to produce an improved device of the kindparticularly suitable for use on shutters, on Window-screens, boxes,trunks, and any other case where it is desirable to fasten a hinge open.

In the accompanying drawings, Figures 1 and 2 are front elevations ofthe device with the sliding member or bolt in locked and unlockedpositions. Fig. 3 is a section on the line 8 3 of Fig. 1.

Referring specifically to the drawings, the hinge-leaves are indicatedat 6 and have at one edge thereof a flange 7. The flanges may beomitted, if desired; but with the flanges the hinges are particularlyserviceable in connection with window-screens and shutters, in which usethe flanges will fit under the rail.

The hinges have two pairs of knuckles, (indicated at 8,) the pairs beingspaced apart a suflicient distance toallow the bolt or member 9 to slidetherebetween across the joint between the leaves.

In the embodiment shown the bolt 9 is a piece of channeled metal havingalong each edge upwardly-projecting flanges, as shown at 10, for thesake of strength and so that the bolt may be readily grasped to bemoved. At 11 is a slot extending lengthwise through the piece, and studsor rivets 12 extend through the slot and confine a keeper 13, the edgesof which overhang the edges of the slot in the bolt 9 adjacent the slot,whereby the bolt 9 is held in place. As before stated, the bolt 9 isslidable lengthwise to the extent permitted by the slot over the jointbetween the hinged leaves. When the hinge is open and the bolt slid overthe joint, the hinge is locked in open position. To close the hinge, itis necessary to slide the bolt back until its end clears the joint atthe knuckles. When it does this, the leaves may be turned and the hingeclosed.

The simplicity of the device is obvious, and it is capable of a widerange of application, a particular use being in connection with foldingwindow-screens, in which when the screen is placed in position it isnecessary or desirable to provide some means for preventing the screenfrom buckling or folding. When applied to boxes, trunks, or the like, itwill be found serviceable in holding the lid open when desired.

What I claim as new, and desire to secure by Letters Patent, is

1. A hinge the leaves of which have laterally-extending flanges at thelower or side edges thereof, adapted to fit under and support the partsto which the hinge is attached, substantially as described.

2. In a lock-hinge, the combination of the pivotally-connected leavesthereof having laterally-extended supporting flanges at the lower edgesthereof adapted to fit under and support the parts to which the hinge isattached, with means mounted on one of said leaves for locking the hingeand the movable parts to which it is attached in an open position.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

WILLARD B. CROFT.

Witnesses:

JOHN A. BOMMHARDT, SHIRLEY BOMMHABDT.

